senator obama likes to talk loudly. >> senator mccain, this is the guy who sang, bomb, bomb, bomb iran. who called for the annihilation of north korea. >> all right. it's a delicate line you've got to -- these candidates will have to walk next week with a live studio audience right near them. >> sure. it just changes the vibe completely. because you know and i know that they don't have any problem kind of challenging you, challenging a reporter, somebody that they're familiar with, you know. they can be really tough on you and say, hey, that's not true. they don't have a problem shouting you down. when you have a bunch of undecidevoters watching you, first of all, you can't be too hot, can't be too aggressive. that vibe is bad in the room. second of all, there's all the theatrics of it for them, which is kind of the, you have to talk to them and seem you're relating to them. i think it adds a whole other level of performance, if you will, to what they're saying. and it's also very hard to evade a question that comes from a town hall person. and the nice thing will be if the town hall p